Here are some one liners...
The Longitude Project is Delayed... Again -- The 7 Years' War has caused a delay in testing, but Harrison set out to develop his 4th clock, a mariner's watch. I talk about GPS and how it is important to remember how to do things manually.
Mozart is born! -- I mostly talk about music and popular movies. Much of his music is instantly recognizable.
A Few Happenings -- German chocolate, Aaron Burr and the Black Hole of Calcutta.
The Longitude Project is Delayed... AgainThe 7 Years' War has disrupted the testing of the 3rd version of the marine chronometer designated H-3. It is small enough to fit into the captains cabin. Amazing! But the British Longitude Board is worried that H-3 might be captured or destroyed. The inventor, John Harrison, has taken 19 years to build H-3. John is in his 60s. How many more clocks can he make? Currently, navigators find their position using a process called "dead reckoning" or "deduced reckoning" by plotting from a known position and then estimating based on assumed speed, and time. This procedure often results in sailing past a destination without realizing it, or unexpectedly running into a destination really, really hard. An early sextant uses astronomical objects to find a position at sea but they haven't figured it all out yet. (In other words, it stinks.) Despite the delays, Harrison has begun work on an even greater invention: H-4... the first marine pocket watch.  
Mozart is born!We call him Amadeus Mozart (am-ah-DAY-us Moh-zart), which is simple compared to his real name. Mozart is not simple, though. He is a musical genius! By age 5 he will be composing his own music, playing the violin and performing before royalty. By 35 he will be dead, buried in a common grave. His country will one day be called Austria. His father is a violinist and music teacher. His mother comes from a musical family. Mozart is a child prodigy and more. He will compose over 600 pieces of music and many of them will remain popular into the modern day.  
- A Little Night Music
- The Marriage of Figaro
- Symphony 40
- Symphony 25
- Motzart's Requium from the movie, Amadeus.
A Few Happenings
- German Chocolate is made in Germany. It is their first chocolate factory. 
- Aaron Burr is born. He will shoot dead Alexander Hamilton in a duel.